参数资料
型号: 440EPX
厂商: Applied Micro Circuits Corp.
英文描述: PowerPC 440EPx Embedded Processor
中文描述: 嵌入式处理器的PowerPC 440EPx
文件页数: 71/94页
文件大小: 738K
代理商: 440EPX
440EPx – PPC440EPx Embedded Processor
Revision 1.26 – October 15, 2007
AMCC Proprietary
73
Preliminary Data Sheet
Thermal Monitor
Thermal monitoring of the chip is accomplished using the PNP transistor (
β ≈ 2) provided on the chip. The collector
of the transistor is connected to ground (GND). The emitter (TherMonA) and base (TherMonB) are connected to
chip pins. A voltage measurement (VBE1 and VBE2) across the TherMonA and TherMonB pins at the two current
values I1 and I2 provides the chip temperature in °K according to the equation:
T = (q/nk)(VBE2VBE1)/ln(I2/I1) °K where q = 1.602 176 53×10
-19, n = 1.0 ± 0.015, and k = 1.380 6505×10-23.
Note: VBE2 and VBE1 should be specified in Volts. I1 and I2 can be any units of measure provided they are the
same. The small values require precision measurement and current sources.
The calculated on chip (ball to ball) series resistance for the PPC440EPx thermal monitor circuit is 2.0 ohms. The
thermal sensor reflects the PPC440EPx junction temperature.
TherMonA
TherMonB
PPC440EPx
I1, I2 (Max = 300μA)
E
B
VBE1, VBE2
Note: The bias voltage VEB should be between +0.5V and +0.7V.
C
Test Conditions
Output
Pin
50pF
Clock timing and switching characteristics are specified in accordance with operating
conditions shown in Table 10 on page 66. AC specifications are characterized with
VDD = +1.5V, TC = +85 °C and a 50pF test load as shown in the figure to the right.
Table 18. Clocking Specifications
Symbol
Parameter
Min
Max
Units
Notes
SysClk Input
FC
Frequency
33.33
66.66
MHz
TC
Period
15
30
ns
TCS
Edge stability (cycle-to-
cycle jitter)
±0.15
ns
TCH
High time
40% of nominal
period
60% of nominal
period
ns
TCL
Low time
40% of nominal
period
60% of nominal
period
ns
Note: Input slew rate
≥ 1V/ns
PLL VCO
FC
Frequency
600
1333.33
MHz
TC
Period
0.750
1.66
ns
Processor (CPU) Clock
FC
Frequency
333.33
666.66
MHz
1
相关PDF资料
PDF描述
440EP Power PC 440EP Embedded Processor
440GP Power PC 440GP Embedded Processor
440GRX PowerPC 440GRx Embedded Processor
440GR Power PC 440GR Embedded Processor
440GX Power PC 440GX Embedded Processor
相关代理商/技术参数
参数描述
440ES001B1434-4 功能描述:环形MIL规格后盖 CRIMIP RING ADPTR DC STRAIGHT RoHS:否 制造商:Amphenol PCD MIL 类型:MIL-DTL-38999 III, IV 系列:AS85049 产品类型:Environmental EMI/RFI Backshells 外壳类型:Straight 外壳大小:18 外壳材质:Aluminum Alloy
440ES031M1633-3B 功能描述:环形MIL规格后盖 BND/SHRNK BOOT ADPTR DC STRAIGHT BAND RoHS:否 制造商:Amphenol PCD MIL 类型:MIL-DTL-38999 III, IV 系列:AS85049 产品类型:Environmental EMI/RFI Backshells 外壳类型:Straight 外壳大小:18 外壳材质:Aluminum Alloy
440ES031M2003-3B 功能描述:环形MIL规格后盖 BND/SHRNK BOOT ADPTR DC STRAIGHT BAND RoHS:否 制造商:Amphenol PCD MIL 类型:MIL-DTL-38999 III, IV 系列:AS85049 产品类型:Environmental EMI/RFI Backshells 外壳类型:Straight 外壳大小:18 外壳材质:Aluminum Alloy
440FA002NF1002-N 功能描述:环形MIL规格后盖 RoHS:否 制造商:Amphenol PCD MIL 类型:MIL-DTL-38999 III, IV 系列:AS85049 产品类型:Environmental EMI/RFI Backshells 外壳类型:Straight 外壳大小:18 外壳材质:Aluminum Alloy
440FA002NF1006-N 功能描述:环形MIL规格后盖 RoHS:否 制造商:Amphenol PCD MIL 类型:MIL-DTL-38999 III, IV 系列:AS85049 产品类型:Environmental EMI/RFI Backshells 外壳类型:Straight 外壳大小:18 外壳材质:Aluminum Alloy